mirror of
https://github.com/element-hq/element-web.git
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3400808f6e
Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
120 lines
4.1 KiB
JavaScript
120 lines
4.1 KiB
JavaScript
/*
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Copyright 2016 Jani Mustonen
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import React from 'react';
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import PropTypes from 'prop-types';
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import { KeyCode } from '../../../Keyboard';
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/**
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* AccessibleButton is a generic wrapper for any element that should be treated
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* as a button. Identifies the element as a button, setting proper tab
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* indexing and keyboard activation behavior.
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*
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* @param {Object} props react element properties
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* @returns {Object} rendered react
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*/
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export default function AccessibleButton(props) {
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const {element, onClick, children, kind, disabled, ...restProps} = props;
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if (!disabled) {
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restProps.onClick = onClick;
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// We need to consume enter onKeyDown and space onKeyUp
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// otherwise we are risking also activating other keyboard focusable elements
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// that might receive focus as a result of the AccessibleButtonClick action
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// It's because we are using html buttons at a few places e.g. inside dialogs
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// And divs which we report as role button to assistive technologies.
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// Browsers handle space and enter keypresses differently and we are only adjusting to the
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// inconsistencies here
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restProps.onKeyDown = function(e) {
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if (e.keyCode === KeyCode.ENTER) {
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e.stopPropagation();
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e.preventDefault();
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return onClick(e);
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}
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if (e.keyCode === KeyCode.SPACE) {
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e.stopPropagation();
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e.preventDefault();
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}
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};
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restProps.onKeyUp = function(e) {
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if (e.keyCode === KeyCode.SPACE) {
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e.stopPropagation();
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e.preventDefault();
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return onClick(e);
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}
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if (e.keyCode === KeyCode.ENTER) {
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e.stopPropagation();
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e.preventDefault();
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}
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};
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}
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// Pass through the ref - used for keyboard shortcut access to some buttons
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restProps.ref = restProps.inputRef;
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delete restProps.inputRef;
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restProps.className = (restProps.className ? restProps.className + " " : "") + "mx_AccessibleButton";
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if (kind) {
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// We apply a hasKind class to maintain backwards compatibility with
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// buttons which might not know about kind and break
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restProps.className += " mx_AccessibleButton_hasKind mx_AccessibleButton_kind_" + kind;
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}
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if (disabled) {
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restProps.className += " mx_AccessibleButton_disabled";
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restProps["aria-disabled"] = true;
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}
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return React.createElement(element, restProps, children);
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}
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/**
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* children: React's magic prop. Represents all children given to the element.
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* element: (optional) The base element type. "div" by default.
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* onClick: (required) Event handler for button activation. Should be
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* implemented exactly like a normal onClick handler.
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*/
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AccessibleButton.propTypes = {
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children: PropTypes.node,
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inputRef: PropTypes.oneOfType([
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// Either a function
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PropTypes.func,
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// Or the instance of a DOM native element
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PropTypes.shape({ current: PropTypes.instanceOf(Element) }),
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]),
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element: PropTypes.string,
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onClick: PropTypes.func.isRequired,
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// The kind of button, similar to how Bootstrap works.
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// See available classes for AccessibleButton for options.
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kind: PropTypes.string,
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// The ARIA role
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role: PropTypes.string,
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// The tabIndex
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tabIndex: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),
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disabled: PropTypes.bool,
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};
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AccessibleButton.defaultProps = {
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element: 'div',
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role: 'button',
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tabIndex: "0",
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};
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AccessibleButton.displayName = "AccessibleButton";
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